Results 61 to 70 of about 6,020,625 (248)

Bee pollen as functional food and environmental bioindicator: current evidence and future challenges

open access: yesJournal of the Science of Food and Agriculture, EarlyView.
Abstract Bee pollen (BP), a plant‐derived product collected by honey bees, is increasingly promoted as a functional food due to its content of proteins, essential amino acids, lipids, vitamins, minerals, and bioactive compounds such as polyphenols and flavonoids.
Luigi Parrotta, Stefano Del Duca
wiley   +1 more source

Pollination and nectar production of Psittacanthus schiedeanus (Loranthaceae) in central Veracruz, Mexico

open access: yesBotan‪ical Sciences, 2010
We assessed nectar production patterns, the breeding system, and overall pollinator dependence of Psittacanthus schiedeanus (Schlecht. & Cham.) G.Don (Loranthaceae), a mistletoe species that blooms in the late summer of the eastern cloud forests of ...
María Magdalena Ramírez   +1 more
doaj   +1 more source

Nectar

open access: yes, 2013
Total nectar sugar produced by H. virgata flowerheads in 1 x 1 m plots of varying floral densities at the sites and dates used in Visitation.csv. Flowerheads were bagged in the morning before insects became active and nectar measured in the late morning
Essenberg, Carla J.   +1 more
core   +1 more source

Butterfly fitness under changing food qualities [PDF]

open access: yes, 2014
The present thesis investigates how different food qualities over the whole life cycle and across generations affect butterfly development and reproduction, and addresses the following main questions: (1) What effects have varying nitrogen ...
Cahenzli, Fabian
core   +1 more source

Afforestation Partially Offsets Losses of Soil Conservation Services and Carbon Stock From Direct and Indirect Urban Expansion in China

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Urban expansion has exerted both direct and indirect impacts on natural land and ecosystem services it supports, driven by increasing population and food demand, yet these underlying pathways remain insufficiently distinguished. Here, we quantified the losses of soil conservation services (water erosion regulation and sandstorm prevention) and
Shuai Liu   +4 more
wiley   +1 more source

Nectar in Plant Species Fragaria vesca L.

open access: yesPlants
Fragaria vesca L. is a common plant species in Slovenia. It flowers from May to July. Our study was conducted throughout the 2024 season in two locations at which we sampled nectar in F. vesca flowers. To take the nectar samples, we used microcapillaries.
Katja Malovrh   +3 more
doaj   +1 more source

Nectar production and presentation

open access: yes, 2007
Nectar secretion is complicated to study from the ultrastructural point of view because it is a dynamic process involving many tissues simultaneously. Study may also be affected by artefacts created by chemical fixation procedures, although this problem ...
PACINI E., NEPI M.
core   +1 more source

Proximity to wind turbines altered plant–pollinator dynamics in prairie and sagebrush ecosystems in Wyoming, USA

open access: yesNordic Journal of Botany, EarlyView.
Wind turbines influence several abiotic conditions in the environments they are sited in and may influence the behavior and movement of insect pollinators. It is unknown how operating turbines influence plant–pollinator interactions. To investigate if pollination dynamics could be affected by the presence of wind turbines, we recorded videos of ...
Michelle Weschler   +2 more
wiley   +1 more source

Area‐restricted search under realistic constraints

open access: yesOikos, EarlyView.
Abstract Area‐restricted search (ARS) is one of the most influential and widely used concepts in foraging theory, capturing a simple rule by which animals intensify local search following a resource encounter. Because ARS performs well in many spatially structured environments, it serves as a basic model for interpreting movement patterns across taxa ...
Inon Scharf, Arik Dorfman
wiley   +1 more source

Effect of Nectar Composition on Bee Attraction for Onion Seed Production

open access: yes, 2015
Onion is the second most cultivated vegetable crop in the world. Two types of onion varieties are usually grown around the world; open pollinated (OP) and first generation (F1) hybrids.
Soto Vargas, Verónica Carolina   +2 more
core   +1 more source

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